Add 72/60 and 21/40
1st number: 1 12/60, 2nd number: 21/40
72/60 + 21/40 is 69/40.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 60 and 40 is 120
Next, find the equivalent fraction of both fractional numbers with denominator 120 - For the 1st fraction, since 60 × 2 = 120,
72/60 = 72 × 2/60 × 2 = 144/120 - Likewise, for the 2nd fraction, since 40 × 3 = 120,
21/40 = 21 × 3/40 × 3 = 63/120 - Add the two like fractions:
144/120 + 63/120 = 144 + 63/120 = 207/120 - 207/120 simplified gives 69/40
- So, 72/60 + 21/40 = 69/40
In mixed form: 129/40
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